Portūnus (less correctly Portum-nus), i, m. [portus],
I the protecting god of harbors , also called Palaemon, Cic. N. D. 2, 26, 66; Ov. F. 6, 547; Verg. A. 5, 241 Serv.; Lact. 1, 21, 23; Inscr. Orell. 1585; Paul. ex Fest. p. 243.—Hence,
II Portūnālis ( Portumn- ), e, adj., of or belonging to Portunus , Portunal : flamen, Poët. ap. Fest. s. v. persillum, p. 217 Müll.—
2 Subst.: Portūnālĭa , ĭum, n., the festival of Portunus , celebrated annually on the 17 th of August , Varr. L. L. 6, § 19 Müll.; Calend. ap. Inscr. Orell. 2, p. 396.